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Mahle Performance Plasma Steel top ring set, 4.080" diameter, noted as 1.0MM with .143" ring width and HVOF moly coating. This top ring set combines plasma steel base material with an HVOF moly surface treatment for the specified dimensions, supplied for use as the top compression ring in engines that call for these exact size and finish specifications.
Mahle Rings Performance Plasma Steel Top Ring 4.080in x 1.0MM .143in RW HVOF Moly Ring Set
